CD Tesis

Pengaruh Penambahan Serbuk Karet Terhadap Temperatur Tinggi Pada Ketahanan Mortar

---

Rubber fibers from used tires can substitute for coarse aggregate, fine
aggregate, and additives to mortar and concrete. Their elastic properties
increased the flexibility and ductility of concrete, yet have not been widely
used as high-value materials. This research used miniscule rubber powder
with modifications of 0%, 2.5%, and 5% of cement weight from used tire
processing in the tire retreading industry as an added material to enhance the
resistance of mortar at high temperatures. The test object was a
50x50x50mm mortar. The mortar was treated for 28 days underwater, then
heated in a furnace using temperatures variations at 250⁰C, 500⁰C, and
750⁰C for 1 hour. Mortar treated at room temperature was used as a control
or comparison. After that, all specimens went through compressive strength
and porosity tests. The test results showed that the rubber powder mortar
increased in compressive strength and exposure to high temperatures,
compared to the non. Bare mortar’s compressive strength room temperature
was 17.60 MPa. When added with 2.5% and 5% of rubber powder, the
strength increased to 17.80 MPa and 18.20 MPa subsequently. At the
temperature of 250°C, bare, non-rubber-powder added mortar had the
compressive strength of 11.92 MPa, when added with 2.5%, the strength
reached 12.40 MPa, and increased up to 13.20 MPa when added with 5%.
Bare mortar undergoing a treatment at 500° C combustion, demonstrated
lower compressive strength compared to the 2.5% added version, with 10.88
MPa in comparison with 12.96 MPa. When increased to 5%, the strength
reached up to 15.92 MPa. The strength significantly drop upon the highest
temperature combustion, 750° C. Bare mortar had only the strength of 6.64
MPa compared to 7.52 MPa after added with 2.5%. Added with 5%, the
strength went up to 8 MPa. Heated at 500⁰ C, mortar with 5% of rubber
powder added yielded the highest compressive strength while reducing its
porosity. The porosity value is inversely proportional to the compressive
strength value of the mortar. Less powder yielded in a higher porosity scores.
Likewise, the sorptivity test rate was also inversely proportional to the
compressive strength value. The higher the temperature, the higher the
higher mortar’s compressive strength, but the lesser the sorptivity value, as
well as the porosity value.
Keywords: Used tires, Mortar, Porosity, Rubber powder, High temperature

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

10 12. 220 (0027)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Teknik Sipil., 2020

Deskripsi Fisik

xv, 80 hlm.: ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

10 12. 220 (0027)

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

TEKNIK SIPIL

Info Detail Spesifik

-

Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar